How to overwrite classes from jdk?

Question

I\'m trying to change some classes from open jdk, so I\'m creating the same package structure as the open jdk classes have and I\'m changing the classes using netbeans. When i\'

Answer 1

This is what the extension classes is intended for.

See http://download.oracle.com/javase/1.5.0/docs/tooldocs/findingclasses.html#javalauncher for details. Basicall you either drop jars in the ext folder, or indicate with system properties what you want in front of the classpath overriding standard Java classes.